CHIGO Smart Bull Head Lock Old-Style Anti-Theft Door Stainless Steel Rural Courtyard Iron Gate Fingerprint Password Lock Outdoor Waterproof

Password input supports virtual password to prevent peeking

NFC mobile unlocking (not compatible with Apple devices)

Mechanical key for emergency unlocking

LCD display for clear menu navigation and user management

Low power consumption with 4 AA batteries, standby up to 12 months

Low battery alarm and emergency USB power supply via power bank

Doorbell function with loud chime sound

CNC precision craftsmanship

Hardened alloy shell for enhanced security and durability

Aluminum alloy and stainless steel body materials

Tempered glass panel (for certain models)

Ultra-narrow bezel design

Original hole coverage for universal retrofit installation

Outdoor waterproof and dustproof cover

Compatible with traditional bullhead lock replacement

Installation requires tools such as electric screwdriver, drill bits, screws, and angle grinder (for iron doors)

Indoor and outdoor installation supported

Powered by 4 AA batteries (no wiring required)

Emergency power supply via USB port

Battery life approximately 6-12 months depending on usage

Battery replacement and charging reminders included

Static current <65μA, dynamic current <250mA

Not suitable for fire escape doors; installation on such doors is prohibited

Backup mechanical key should be stored outside the home for emergencies

Fingerprint sensor and touchscreen should be cleaned regularly with dry cloth only

In cold weather, warm fingers before use to improve fingerprint recognition

Please confirm door type with customer service before ordering

Supports multiple user management with add/delete functions

Welcome voice prompts and user-friendly interface

Supports temporary passwords for guest access

Supports multiple locking modes to suit different user needs